Spirit-level.



W. J. CASSITY.

SPIRIT L EVEL.

APPLIGATION FILED Emme, 1914.

1,108,1 34, Patented Aug. 25, 1914* nl /2 Y t? Y Y M m :'16`

6 Z-,QY

wbb/www Specification of -Ze Application filed February iron stock,

' din-al edges of the A further object of the invention is to construct the sheet metal. steelt in suoli a anner that it will be extremely strong ar durable,

and wherein the spirit tubes for leveling and plumbing are mounted in a novel and elli` cient manner, whereby they are protected 'against injury and are at the same time visible to the operator.

The invention consists in construction, combination, and arrangement of parts, hereinafter fully described, and claimed, reference being had to the accolapanying drawing, in which:

Figure l is a traginentaryside eleva of the level; Fig. 2 is a top elan viewsame' 3 is an end vieiv is a transverse sectiona F ig. l; and Fig. 5-5 of Fig. 2.

The elongated steelt of t! l: l structed ot2 very few parts i l i' i side plates l, the top and bot n l ips 2 and 3 and the end plates l, all of which a to be pressed from sheet steel, o.. the li The medial portions of the side arranged substantially parallel, their upper and lower portions are bulged outwardly to provide longitudinal ribs 6 and 7 respectively. The extreme unA l" the plates l are bent laterally to the medial portions of the s l provide the oppositely extending lang The top strip 2 is adapted to flanges and has crimped as at9 so of the flanges 8. Correspondingly arranged, lateral flanges are provided by the lower edges of the side plates l, and the .longitubottoni strip 3 are crimped around the saine. The active the top and bottoni strips therefore errang l and at tioaliy t.

8 overlie these its longitudinal edges as to embrace the edgesstools,

l l l l 15" l i l ktop and bottom strips 1. and 3 are' conn, acted equalin width aud have their longitudinal edges parallel. 'ifb'e ends ot the stoel; are sealed by the end plates el, which are .cut to Conform transverse sectional configuration of the stock, and are preferably soldered thereto.

The stock is provided adjacent to each end with a transverse opening l0 in its medial web portion, this opening being eonstructed of suclr diameter that it opens intor the compartmens formed between the buhD portions G L 7 of the side plates as il and l2 respect vely. A spirit tube 13 is mount@ l Within each opening thus formed e stoel; and is arranged at right angles to he longitiulinal axis ot the stock 'with its 'ends projecting into and secured Within the compartments just referred to by means of attaching members i3 which may be solde-i ed or riveted to Walls ot the coinspirit tubes are adapted liese tor use `n plumbing vertical surfaces. Si

' it tube il tor use in leveling operseeured by means of attaching "a in similar manner niedially upper compartment of the stock El nity to the top strip 2, and the frovioed 'i i short longitudinal the glass may be ine side openings 16 ided in the upwardly convergof the bulging` s Y Lantially eoextensive ie or the same purpose. F rom the foregoing description, taken in connection with the accompanying drawing, should be apparent that l have provided a simply constructed and. efficient level device which may be manuiacutred cheaply an will withstand the severe usage to which. such an instrument is ordinarily subjected, with comparatively little danger ot injury to the spirit tubes or the stock itself, owing to the specilic formation of the latter and the arrangement of the spirit tubes therein.

lllhat is claimed is:

l. ln a spirit level, a sheet metal steek comprising side plates having their medial portions closely abutting and their upper and lower portions bulged outwardly to torni longitudinal compartments, the exituri l edges of the side plates .e plate portions with the spirit toni strips of metall secured to the outer faces of the said flanges, the said stock being pre- 1vided in its medial wel) fpei'tion with u, tuinsi'erse opening communicating with the up per und levier eoni'pn1't1nentfs,' and e spirit tube mounted within the said opening with 'its ends projecting into the said eonipmt ments und being arranged. nt right :ingles to the longitudinal axis of the stock.

2. In a spirit level, n sheet metal steek comprising side pla-tes having their ineclinl portions closely abutting und their upper portions bulged outwardly to forni a longitudinal compartment, the extreme l0ngi tudinnl edges ol the side plates being;` bent laterally to form flanges arranged at right l angles to the vertical plane of the lengitn dinal exis of tlie steek, top @nel bottom stips of metal secured to the enter 'faces the seid flanges, and n.. spirit tnbeinonn'ted Wi. li 2e in the longitudinal eninpeitinent of steel;7 the top strip anal. the bnl of the side plate being pz vided with ley tudinel View openings to efiliese @ottiene the said tube.

En testimony wliei'eo'b my signatue in presence oit two Witnesses.

WiLLifiii/i J. @Assi Vitnesses .Emmi A. FERGUSON, llJAn'i'nnnniMnn. 

